CV Joint chaos: still trying to find the cause of the whistling sound in the front left side.

I thought I had a problem with the CV joint of my 2001 Mitsubishi Magna (with only 90,000km on the odometer). But the mechanic said everything looked in pristine condition. The problem is when the car drives, there is a whistling type sound coming from the front left side of the car, which gets louder as the speed increases. But this whistling sound disappears when I gently apply the brakes. So I am still baffled by the problem.
Have you encountered this before?

A whistling sound you say? The fact that braking even gently stops the sound is interesting. The brakes when applied transfers power back through the drive train, so if it is an automatic I would service the valve body in the trans. (An easy job on the Magna) Otherwise check the tension is correct on your wheel bearing on that side by comparing it with the other side. If the bearing is even slightly loose it can cause the caliper to make a noise. Check your disc pads to ensure there is no foreign material in them, check the disc retaining clips to see that they are undamaged and not touching on the rotor. I hope this helps, if not I am happy to assist with information about your Magna noise if you can tell me a bit more.

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